<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import { debounce } from '@/utils'
import { queryDashboard } from '@/api/testDashboard'

export default {
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '350px'
    }
  },
  data() {
    return {
      chart: null
    }
  },
  mounted() {
    this.initChart()
    this.__resizeHandler = debounce(() => {
      if (this.chart) {
        this.chart.resize()
      }
    }, 100)
    window.addEventListener('resize', this.__resizeHandler)
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    window.removeEventListener('resize', this.__resizeHandler)
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons')
      queryDashboard().then(res => {
        this.chart.setOption({
          tooltip: {
            trigger: 'item',
            formatter: '{b} : {c}'
          },
          legend: {
            left: 'center',
            bottom: '10',
            data: res.ageData.legend
          },
          calculable: true,
          series: [
            {
              name: res.ageData.name,
              type: 'pie',
              roseType: 'radius',
              radius: [15, 95],
              center: ['50%', '38%'],
              data: res.ageData.data,
              animationEasing: 'cubicInOut',
              animationDuration: 2600
            }
          ]
        })
      })
    }
  }
}
</script>
